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【简答题】
已知二进制数字信号在2分钟内共传送72000个码元,则码元速率为______Buad;传送1小时后,接收到的错码为216个,其误码率为_______(第2空答案用小数表示,不允许用分数)。
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举一反三
【简答题】(two seperate companies) joining together
【单选题】An optical sensor starts to seperate two objects on ground, ().
A.
when the first dark edge of an Airy pattern overlaps on the other's edge
B.
when the first dark edge of an Airy pattern overlaps on the other's center
C.
when the first dark edges of two Airy patterns are some distance from each other
D.
when the second dark edge of an Airy pattern overlaps on the other's center
【多选题】What are the two seperate parts of individualism?
A.
socialism
B.
optimism
C.
idealism
D.
materialism
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